In response, your body sends LDL cholesterol to these areas like a sort of biological bandage. However, if the underlying causes aren’t addressed, the arteries continue to deteriorate. Over time, plaque forms—a hardened mix of scar tissue (fibrin), calcium, cholesterol, and other debris.
This plaque hardens like bone, narrowing the arteries even more and obstructing blood flow. If a major coronary artery becomes completely blocked, it can lead to a heart attack—and even death.
Symptoms of Blocked Arteries
You might feel pressure or pain in your chest—especially during physical activity or emotional stress—that eases when you rest. This kind of discomfort often stems from high blood pressure and poor blood flow to and from the heart.
Other warning signs include pain or swelling on the left side of the body, such as the left shoulder or arm. You may also find it harder to breathe, especially while walking, because your arteries aren’t delivering enough oxygen.
